JP2007001527A - Safety device for mono-rail carrier start - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that when starting is performed by a cell motor or a recoil starter with a clutch lever turned ON, an engine is put in the operation state and motive power is transmitted as engine speed increases to a centrifugal clutch to let a mono-rail carrier start suddenly. <P>SOLUTION: The safety device for mono-rail carrier start is constituted such that a solenoid valve 9 for cutting flowing-in of a fuel is provided on a stop device for the engine 1, the valve is opened at energization and when a current is shut off, the solenoid valve 9 is closed. ON/Off of the clutch lever 10 of the motive power is detected by a limit switch 17 and existence of the operation state of the engine is further detected. In the case of ON of the motive power clutch lever 10, the solenoid valve 9 is electrically controlled so as to retain the closed state except for existence of the operation state of the engine 1 and starting of the engine of both the cell motor 20 and the recoil starter 14 cannot be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The starting safety device for a single rail transporter according to the present invention is such that when the power clutch lever (this is referred to as a clutch lever) is started with a cell motor or a recoil starter, the engine enters an operating state, and the rotation increases. It relates to a starting safety device that ensures the starting and running of a single rail transporter in order to provide a single rail transporter that can solve the problem of sudden start of the single rail transporter transmitted to the centrifugal clutch and eliminate the risk of erroneous operation It is.

  As for the single rail transporter, one that transmits power from an engine to a reduction gear via a centrifugal clutch is generally known. This is done by operating the clutch lever to “ON” or “OFF”. With this structure, when the clutch lever is operated in the “in” direction, the throttle wire that raises the engine speed is actuated. At the same time as the power is transmitted by the clutch, the single rail transporter starts moving by releasing the brake provided in the speed reducer in conjunction with the cam or the like. For this reason, when the engine is started with the clutch lever in the “on” state, the engine speed rapidly rises and is immediately transmitted to the speed reducer by the centrifugal clutch, and suddenly starts by the drive wheels, causing an accident.

  A truck that is pulled by a motor vehicle is designed to be equipped with a side brake to activate the brake of the truck for passengers. When the side brake is operated, the engine is electrically stopped. It is. In an engine starter, a recoil starter system, a cell motor system, or a combination of the two is used.

  In these conventional technologies, for example, when the clutch lever is started with the cell motor in the “on” state, the engine is in an operating state, and when the rotation is increased, power is transmitted to the centrifugal clutch and the single rail transporter starts to move suddenly. there were. In the case of a gasoline engine, there is a similar problem when it is started by operating the recoil starter with the switch "ON".

As a measure to improve this, in the case of a gasoline engine, the limit switch detects that the clutch lever is in the “off” state, and enables the start of the cell motor or the limit switch detects that the clutch lever is in the “on” state. However, if the circuit configuration is such that the cell motor is electrically shut off so that it cannot be started, or if the engine starter circuit is provided with a regulator and relay circuit, and the clutch lever is in the “on” state, the recoil starter can be pulled. It is possible to configure a circuit that electrically shuts off the engine so that it does not start.
However, in the case of a diesel engine, using a conventional electromagnetic valve to start the engine without an ignition device, the fuel supply valve closes with the key switch `` off '' to cut the fuel, the engine is stopped, After the timer set time, the fuel supply state is restored. Such an engine stop device cannot be electrically controlled so as not to start the engine even when the recoil starter is pulled. This is because a diesel engine is equipped with an electromagnetic valve on the engine stop device, and a key switch “off” is used to activate the electromagnetic by using a timer to keep the valve in the “closed” state. In many cases, the valve will return to the `` open '' state, but if the key switch is `` off '' and the valve is in the `` open '' state after the engine stops, the key switch will be `` off '' regardless of `` on '' or `` off ''. Even in such a case, there is a problem that the engine is started when the recoil starter is manually operated with the power clutch “ON”. In the actual field, the combined use of the cell motor and recoil starter is useful. This is because the recoil starter is often used as an emergency starter. For this reason, when a single-rail transporter equipped with a diesel engine has a recoil starter device as an emergency, the safety at the start of the recoil starter has been a problem.

In order to solve these problems, in the case of the single rail conveyor shown in Japanese Patent Application Laid-Open No. 2000-211151, an arm that engages with a clutch lever that turns on / off power is provided. The engine is known as a starting safety device in which the arm is engaged with the clutch lever and the power transmission is kept in the off state except in the engine operating state. However, since this start safety device is configured to rotate the arm using an electric cylinder, the cost is high and the worker is complicated at the civil engineering work site used by an unspecified worker. There was a drawback that it was impossible to understand and operate the structure. Non-Patent Document 1 is a document shown in order to understand the “electric circuit” of FIG. 2 of the present invention.Solenoid valve means an electromagnetic valve, and electromagnetic relay means a relay.
JP 2000-211151 A Issued on August 25, 1983 Basic Electrics for Machine Sites <Basics of Sequence Control> Author Den Mochizuki (Representative) Publisher Technical Review Co., Ltd. A / B type 2 contacts in sequence control technology (page 22), electromagnetic relays Principle of operation (Fig. 2.12 on page 42), operation explanatory diagram of solenoid valve (electromagnetic valve) (Fig. 2.45 on page 72)

  The problem to be solved is that when the clutch lever is left in the “on” state and the engine of the single rail transporter is started with a cell motor or recoil starter, the key switch is turned on or off. When the engine is in an operating state and the rotation speed is increased, power is transmitted to the centrifugal clutch, and the safety of the operator cannot be ensured. The present invention is intended to provide a single rail transporter that can solve the problem and can be started safely at any time.

  The present invention relates to a fuel supply path for an engine in a single-rail transporter that travels by gripping a rail with a driving wheel that obtains thrust by engaging with a hole or rack provided in an inclined rail and a roller that rolls the rail. An electromagnetic valve is provided to stop the inflow, and when energized by the input of the main key switch, this solenoid valve is opened to supply fuel.When the main key switch is turned off and the current is cut off, the electromagnetic valve is closed and the fuel is supplied. It is configured to stop the inflow and detect whether the power clutch lever is “on” or “off” to detect whether the engine is operating. If the power clutch lever is “on”, the engine operating state is “present”. Except for the above, the electric current is cut off and the electromagnetic valve is electrically controlled so as to keep the closed state, so that both the cell motor and the recoil starter cannot start the engine. The most important feature to be formed.

  In a single rail transporter that has a centrifugal clutch on the engine output shaft and transmits power from the centrifugal clutch to the speed reducer with a belt, the throttle wire that controls the engine speed is linked to the power clutch lever, and the engine is in the power clutch "ON" state. The operation state of “Yes” is detected, the electromagnetic valve is opened, the fuel supply to the engine is maintained, and the engine rotation is continued. After starting, the engine operating state is maintained “present” and the engine speed is increased so that the engine power is transmitted by the centrifugal clutch.

  A drive wheel is provided on the final shaft of the reduction gear of the motor vehicle, a centrifugal brake and a stop brake are provided on the intermediate shaft, and in conjunction with the power clutch lever, the stop brake is activated when the power clutch is turned off. A brake wheel is provided on the final shaft of the speed reducer provided on the carriage connected to the car, and a centrifugal brake and a truck stop brake are provided on the intermediate shaft of the speed reducer, and the truck stop brake is operated by a brake lever. The brake lever is provided with a brake switch to detect either brake operation or release, and is electrically controlled so that the engine cannot be started when the brake is operated.

  The main key switch 19 of the cell motor 20 for starting the engine in the single rail transporter having the characteristic function is provided, and the recoil starter 14 for starting the engine 1 manually is provided. The electrical control will be described. When the main key switch 19 of the control box 18 is “off”, the fuel electromagnetic valve 9 is also “off”, so the fuel electromagnetic valve 9 is closed and fuel cannot be supplied. The engine cannot be started. Next, when the main key switch 19 is set to ignition (IG), the fuel electromagnetic valve 9 is turned on when the start limit switch 17 is “off” and the truck stop brake switch 27 is “off”. That is, the valve of the electromagnetic valve 9 provided in the fuel supply path is opened to enter a fuel supply state, and the recoil starter 14 can be started. Next, when the main key switch 19 is set to start (S) and the engine 1 is started, the oil pressure switch contact relay 26R1 is turned “ON” at this time. Fuel is supplied when the pressure switch contact relay 26R1 is “off”, the engine stop solenoid operation relay 25R2 is “off”, and the electromagnetic valve 9 is “on”. Therefore, the vehicle can be driven by the power clutch lever 10 “ON”. If the engine is started with the power clutch lever in the “on” state, the start limit switch 17 is “on”, the relay 26R1 is “on”, and the relay 25R2 is “on”. At this time, the fuel electromagnetic valve 9 is “off” In this case, neither the cell motor 20 nor the recoil starter 14 can start the engine. When the stop brake of the carriage is activated, the carriage stop brake switch is turned “ON”, the relay 25R2 is also turned “ON”, and similarly, the engine cannot be started by either the cell motor or the recoil starter. Further, when the stop brake lever of the carriage is manually operated during traveling, the carriage stop brake switch “ON” turns on the relay 25R2 “ON”, and the electromagnetic valve 9 closes, so the engine stops. Since the vehicle body stops while the power clutch lever 10 of the power vehicle remains “ON”, it is necessary to switch the power clutch lever 10 “OFF” and the carriage stop brake lever “OFF” to start the engine 1 again. As means for detecting the presence or absence of the engine operating state described in the above paragraphs 0008 to 0009, detection may be performed by turning on and off the engine oil pressure switch, or may be detected by a charge voltage.

The start safety device of the present invention detects whether or not the engine is operating by the on / off of the engine oil pressure switch 22 or the charge voltage. In the engine operating state, the electromagnetic valve 9 is opened to supply fuel, and before starting and after stopping. When the engine operating state “none” is detected and the engine is not operating, the fuel is supplied by closing the electromagnetic valve 9 provided in the fuel supply path when the power clutch lever 10 is in the “on” position. I was unable to.
Even if the main key switch 19 is input, if the engine operating state is “present”, the fuel is supplied. Otherwise, if it is detected that the power clutch lever 10 is in the “on” position, the power is supplied. Until the clutch lever 10 is set to the “OFF” position, there is an advantage that the electromagnetic valve 9 can be securely closed and fuel can be supplied safely without starting.

  The purpose of the power clutch lever is to prevent the engine from starting when the engine is started and the engine of the single rail transporter is started safely when the engine is in the “ON” state and “NO”. An electromagnetic valve is provided that opens and closes when the main key switch is turned on, and interlocks with the power clutch lever on / off and engine operating status on / off. That was realized.

  FIG. 1 is a side view of an embodiment of the apparatus of the present invention, and FIG. 2 is an electrical control circuit diagram. 1 is an engine, 2 is a centrifugal clutch, 3 is a buoy (V) belt, 4 is a buoy (V) pulley, 5 is a reduction gear, 6 is a drive wheel, 7 is a lower guide roller, and 8 is , Upper roller, 9 is a fuel solenoid valve, 10 is a clutch lever for power “on” and “off”, 11 is a battery, 12 is a stop brake, 13 is a stop brake arm, 14 is a recoil starter, 15 is a throttle wire, 16 is a link mechanism, 17 is a start limit switch (a limit switch for detecting the start of a single rail transporter), 18 is a control box, 19 is a main switch, and 20 is a cell motor. , 21 is a starter, 22 is an oil pressure switch, 23 is a glow, 25 is a relay R2 for operating a fuel electromagnetic valve, 26 is an oil pressure switch contact relay R1, 27 is a truck stop brake switch. When the electromagnetic coils 25 and 26 of the relays R1 and R2 are not energized, the relay contacts R1 and R2 are “closed”. The contact A of the truck stop brake switch 27 is “closed” when the truck brake lever is operated, and the relay 25R2 is energized, and the contact R2 is “open” and the fuel electromagnetic valve circuit is not energized. close. The B contact is “closed” when the lever or the like is not operating. The oil pressure switch 22 is “closed” when the engine is not started.

  A power clutch lever 10 is provided in the single rail transporter, and a start limit switch 17 for detecting “ON” and “OFF” of the clutch is provided in the power clutch lever. In addition, the engine oil pressure is detected by turning on / off the engine oil pressure switch 22 to detect “present” or “no” of the engine operating state, and cuts inflow of fuel when the engine is stopped. An electromagnetic valve 9 is provided, which is configured to open when energized and close when the current is interrupted. That is, when the power clutch lever 10 is “ON”, the electromagnetic valve 9 is opened when the engine operating state is “present”, and when the engine operating state is other than “present”, the electromagnetic valve 9 is electrically maintained so as to maintain the “closed” state. Control is performed as shown in the control circuit diagram.

  The case where the engine operating state is “present” will be described. When the current flowing through the oil pressure switch 22 is detected in the engine operating state and the power clutch lever 10 is turned “ON”, the electromagnetic valve 9 is in an open state, so that fuel is continuously supplied and the engine is maintained in the operating state. On the other hand, engine power is transmitted by a buoy (V) belt 3 hung on a buoy (V) pulley 4 from a centrifugal clutch 2 provided on an output shaft. The link brake 16 linked to the power clutch lever 10 releases the stop brake 12 provided on the intermediate shaft of the reduction gear 5, and at the same time, the throttle wire 15 linked to the power clutch lever is pulled to increase the engine speed. Power is transmitted to the speed reducer 5 via the centrifugal clutch 2, and the upper roller 8 and the lower guide roller 7 grip the rail to run.

When the current flowing through the oil pressure switch 22 is detected in the engine operation state and the power clutch lever 10 is turned “off”, the electromagnetic valve 9 is in the “open” state, so the engine keeps the operation state. The stop brake 12 is actuated by the link mechanism 16 interlocked with the power clutch lever 10 and simultaneously the throttle wire 15 is returned, the engine rotation is lowered, the engine power is cut off by the centrifugal clutch 2 and the airframe is stopped.

A case where the engine is stopped and the operation state is “none” will be described. In this state, even if the power clutch lever 10 is operated to “ON” and the cell motor 20 and the recoil starter 14 are started by the main switch 19, the electromagnetic valve 9 is kept in the “closed” state. 1 does not start.
When the power clutch lever 10 is operated to “OFF” while the engine is stopped and the cell motor is started by the main switch 19, the electromagnetic valve is “open” when the main switch is ON, and the engine can be started.

  The battery 11 may be discharged and it may be difficult to start with the cell motor. Usually, such a battery does not have enough voltage to start the cell motor, but the voltage capacity for operating the electromagnetic valve is sufficiently maintained. Therefore, when the main switch 19 is turned “on”, the electromagnetic valve 9 is “open”, and the engine can be started by the recoil starter 14.

As explained in detail in the background art, in the case of a single rail transporter, there are many that use a centrifugal clutch. In this case, a throttle wire is interlocked with the power clutch lever so that the centrifugal clutch is connected by increasing the engine speed. For this reason, when the engine is started with the clutch lever in the “on” state, the engine speed rapidly rises, and power is transmitted to the speed reducer by the centrifugal clutch, causing an accident that starts suddenly by the drive wheels. The present invention is to improve this disadvantage. In the state where the clutch lever 10 is “ON”, the fuel electromagnetic valve 9 is closed and the engine cannot be started. According to the present invention, when the trolley stop brake switch 27 is "ON" and the trolley stop brake is operating, the brake switch 27 of the trolley brake lever detects that the brake is operating, so the power clutch 2 of the power vehicle The engine cannot be started even when is off. The cart brake switch 27 is turned “off” to release the cart stop brake, and the engine can be started in the power clutch 2 “off” state. .

In the case of a normal single-rail transporter, when the power clutch is turned off in conjunction with the power clutch lever, the stop brake is operated by the stop brake arm via the link mechanism, and when the power clutch is turned on, the stop brake is turned on. This is to be released, but this makes it possible to operate with one lever to start and stop on the slopes of steep slopes, which is a feature of the single rail transporter.
For example, when a cart is connected to the rear of the motor vehicle and is stopped on an inclined ground, the regular cart also has a brake device dedicated to the cart, and the cart brake is operated by the cart brake lever. In this situation, when the start safety device of the present invention is not provided, the stop brake is released when the power clutch lever is set to the “ON” state, but the airframe remains stopped on the slope by the carriage brake. When the main switch is turned on, the refueling solenoid valve is opened and the cell motor can be started. As soon as the engine is started, the motor vehicle starts suddenly and runs with the cart brake activated. It will be. For this reason, there is a problem that the seizure of the brake and damage to the brake wheels and rails occur.
According to the present invention, when the trolley stop brake is operating, it is detected by the brake switch 27 of the trolley brake lever that the brake is operating, so that the engine can be started in the power clutch 2 “disengaged” state of the power vehicle. Therefore, the above problems are eliminated. Even if the carriage brake is released, there is no safety problem because the stop brake 12 of the powered vehicle has a sufficient braking force to stop the body on which the load is loaded on the slope.

A single rail conveyor equipped with a diesel engine will be described using the present invention.
Some diesel engines are provided with an electromagnetic valve in an engine stop device. In these cases, there are many cases where the valve is kept in the “closed” state by applying electromagnetic force using a timer or the like with the key switch “off”, and the valve returns to the “open” state after a certain period of time after the engine stops. In this case, if the valve is in the “open” state after the engine is stopped by the key switch “off”, the engine is started when the recoil starter is manually operated even if the key switch is off or the power clutch is “on”. The engine stop device of the present invention basically keeps the valve open in the key switch “ON” state, but electrically keeps the valve closed except for the power clutch “ON” in the engine operating state. Controlled. In the case of the present invention, even when the engine 1 is stopped, the main switch 19 is “on” with the power clutch lever 10 “off”, and when there is a connected cart, the start by the operation of the recoil starter 14 is not made unless the cart brake is released. As a result, if the power car with the recoil starter 14 is pulled out of the key switch, the engine cannot be started, safety management becomes easier, and accidents of sudden start at the start by the recoil starter are also possible. Disappear.

It is a side view of a single rail transporter equipped with a starting safety device for a single rail transporter. Example 1 It is the circuit diagram which showed the electric circuit which operates a starting safety device. Example 1

Explanation of symbols

1 Engine 2 Centrifugal Clutch 3 Buoy (V) Belt 4 Buoy (V) Pulley 5 Reducer 6 Drive Wheel 7 Lower Guide Roller 8 Upper Roller 9 Fuel Electromagnetic Valve 10 Clutch Lever for Power “On” and “Off” 11 Battery 12 Stop Brake 13 Stop brake arm 14 Recoil starter 15 Throttle wire 16 Link mechanism 17 Start limit switch (limit switch for detecting the start of the single rail transporter)
18 Control Box 19 Main Switch 20 Cell Motor 21 Starter 22 Oil Pressure Switch 23 Glow 25 Fuel Electromagnetic Valve Acting Relay 26 Oil Pressure Switch Contact Relay 27 Dolly Stop Brake Switch

Claims (4)

  In a single rail transporter that travels by gripping a rail by means of a drive wheel that obtains thrust by engaging with a hole or rack provided in an inclined rail and a roller that rolls the rail, a fuel supply path is provided to an engine stop device An electromagnetic valve is provided to stop the inflow, and when energized, the electromagnetic valve is opened to supply fuel, and when the current is interrupted, the electromagnetic valve closes to stop the inflow of fuel, and the power clutch lever is turned on. ”” Off ”is detected and“ Yes ”or“ No ”in the operating state is detected. When the power clutch lever is“ On ”, the solenoid valve is kept closed except for the engine operating state“ Yes ”. A starting safety device for a single-rail transporter, which is configured to be electrically controlled so that both the cell motor and the recoil starter cannot start the engine.   In a single rail transporter that has a centrifugal clutch on the engine output shaft and transmits power from the centrifugal clutch to the speed reducer with a belt, a throttle wire that controls the engine speed is provided and linked to the power clutch lever. 2. The starting safety device for a single rail transporter according to claim 1, wherein the engine power is transmitted by a centrifugal clutch when the engine speed increases in the "ON" state.   A drive wheel is provided on the final shaft of the reduction gear of the motor vehicle, a centrifugal brake and a stop brake are provided on the intermediate shaft, and in conjunction with the power clutch lever, the stop brake is activated when the power clutch is turned off. A brake wheel is provided on the final shaft of the reducer provided on the carriage connected to the vehicle, and a centrifugal brake and a carriage stop brake are provided on the intermediate shaft of the reducer, and the carriage stop brake is operated by a brake lever. The start of the single rail transporter according to claim 1 or 2, wherein the lever is provided with a brake switch to detect brake operation and release, and is electrically controlled so that the engine cannot be started when the brake is operated. Safety device.   4. A starting safety of a single rail transporter according to any one of claims 1 to 3, wherein a main switch of a cell motor for starting the engine is provided and a recoil starter for starting the engine manually is provided. apparatus.

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